WDR Roofing Company Austin - Roof Repair & Replacement
Austin, TX, USA
Your plan to put in a stack of rigid foam rectangles in Every rafter bay is known as the "Slice-and-cobble" means of insulation. It is a way often picked out by homeowners, but by no means preferred by insulation contractors.
The customers of CRA invite and motivate you to join! By Functioning together, we will achieve our mission to take care of and enhance our field as a whole.
Naturally, you'll however have thermal bridging in the rafters. But you won't have any humidity problems.
Should I take advantage of airtight baffles or not, I do not see a method to have humidity escaping within a assembly with airtight baffles, fiberglass and xps on the inside, regardless of the the dew point are going to be inside this assembly and possibly produce condensation that are unable to evaporate without ventilation.
This text was incredibly enlightening and looked as if it would give a great deal of recommendation on cathedral ceilings. But what what my perfect storm? The home is 30 decades outdated (80's) and im confident the ceiling will not be air limited. I would like to do a thing this summer months/tumble to test to repair these leaks but I'm nervous that regardless of what I do wont get the job done and can be described as a squander of money, Particularly given that I havent heard of a sound Resolution.
Also, Why don't you zip panels taped after which you can roxul batts with drywall in excess of that. Roxul is amazing things I have been tests For several years in nuts strategies trying to see its skills. I think that zip panels, taped properly, with roxul batts will final as long as the roof!
I'm dealing with a little unique situation that I might like some input on. I'm developing a winery tasting room within a masonry building (8" monolithic reference concrete partitions) in 4C/5B climate zone in So. OR. I've acquired an uncovered 2x10 T&G ceiling about GLB purlins @ five'oc, so I am building it from more helpful hints the bottom up and the final layer to go on could be the sheathing beneath the steel roofing. I had planned to set up an air barrier around the T&G deck (taped felt) then frame 2x8 @ 24"oc with high density batts to fill the cavities, above which is the sheathing underneath the metallic roofing.
I don't have lots of room above or under the roof structure for insulation / venting. Would a flash / batt unvented assembly work beneath The only sheathing deck? My insulator has completed quite a few of such regionally.
As I stated within the article on this page, You can not use fluffy (air-permeable) insulation in an unvented roof assembly Unless of course you include rigid foam or spray foam over the fluffy insulation.
So a hybrid approach should be investigated. Dense packed cathedrals with warmside ridged foam to add R, taped, no recessed lighting or other air paths and then belt and suspenders... Insert venting Although there is no regular one" vent path.
On the other hand, I feel you might be Erroneous about your asphalt felt; I doubt In case the felt is impermeable to drinking water vapor. Most forms of asphalt felt are somewhat permeable -- ordinarily five perms when dry and around 60 review perms when wet.
Really should I take care of the flat roof being a cathedral ceiling and go with spray foam (or board), fiberglass, and no dampness barrier?
And finally, I kow the recessed lighting is Terrible, but what am i able to do if it is already installed? With among the list of lights I improved it about to some pendant mild which minimized the heat near the roof but the air barrier remains a situation.
The roof was shingles on t&g pine decking. Insulation was ideal up towards that pine decking given that seventy seven which is 2014. Stuff looks like it absolutely was mounted yesterday. Not a nasty spot any place, no roof vents completely unvented roof.